Table 3.
Selected characteristics of participants in the ELF cohort.
| Characteristics |
|
Online | Offline | All | P valuesc |
|
|
|
n=468 (%) | n=574 (%) | N=1,042 ($) |
|
| Maternal age, y | ≤25 | 12.6 | 15.9 | 14.4 |
|
|
|
26-31 | 37.5 | 34.4 | 35.8 |
|
|
|
32-35 | 28.9 | 31.5 | 30.3 |
|
|
|
≥36 | 21.0 | 18.2 | 19.4 |
|
|
|
Missing data | n=1 | n=3 | n=4 | P= .24 |
| Partner status | No | 3.9 | 5.8 | 4.9 |
|
|
|
Yes | 96.2 | 94.2 | 95.1 |
|
|
|
Missing data | n=0 | n=1 | n=1 | P= .15 |
| Ethnicity | NZ European | 78.6 | 70.8 | 74.3 |
|
|
|
Maoria | 7.9 | 11.4 | 9.8 |
|
|
|
Other | 13.5 | 17.8 | 15.9 |
|
|
|
Missing data | n=0 | n=2 | n=2 | P= .01 |
| Regions participating | Auckland | 33.6 | 40.6 | 37.5 |
|
|
|
Wellington | 45.8 | 41.6 | 43.5 |
|
|
|
Canterbury | 13.1 | 10.8 | 11.8 |
|
|
|
Other | 7.5 | 7.0 | 7.2 |
|
|
|
Missing data | n=3 | n=0 | n=3 | P= .12 |
| NZDep06b | Quintile 1 | 26.7 | 26.5 | 26.6 |
|
|
|
Quintile 2 | 25.2 | 22.3 | 23.6 |
|
|
|
Quintile 3 | 22.0 | 22.0 | 22.0 |
|
|
|
Quintile 4 | 16.0 | 17.7 | 16.9 |
|
|
|
Quintile 5 | 10.1 | 11.5 | 10.9 |
|
|
|
Missing data | n=4 | n=0 | n=4 | P= .75 |
| Highest educational level | Primary school | 0.0 | 0.5 | 0.3 |
|
|
|
Secondary/college | 15.1 | 18.5 | 16.9 |
|
|
|
University/tertiary | 84.9 | 81.0 | 82.8 |
|
|
|
Missing data | n=3 | n=5 | n=8 | P= .09 |
| Total household income | $1-$40,000 | 6.4 | 10.6 | 8.7 |
|
|
|
$40,001-$70,000 | 22.9 | 21.5 | 22.1 |
|
|
|
$70,001-$100,000 | 23.6 | 24.4 | 24.0 |
|
|
|
$100,001+ | 47.0 | 43.5 | 45.1 |
|
|
|
Missing data | n=45 | n=57 | n=102 | P= .12 |
| First pregnancy | No | 56.7 | 53.3 | 54.9 |
|
|
|
Yes | 43.3 | 46.7 | 45.1 |
|
|
|
Missing data | n=1 | n=2 | n=3 | P= .27 |
| Stage of pregnancy | Trimester 1 | 5.3 | 1.0 | 3.0 |
|
|
|
Trimester 2 | 31.0 | 16.2 | 22.8 |
|
|
|
Trimester 3 | 53.6 | 59.8 | 57.0 |
|
|
|
Full term | 10.1 | 23.0 | 17.2 |
|
|
|
Missing data | n=0 | n=0 | n=0 | P<.001 |
aMaori = Indigenous people of New Zealand.
bNZDep06 Quintiles = New Zealand Deprivation Index 2006: a scale based on Census information, where 1 represents 10% of the least deprived and 10 represent 10% of the most deprived people in New Zealand.
c P values = chi-square test